hg: jdk/sandbox: 8247220: Make OopHandle constructor explicit

[chris.hegarty at oracle.com]

Changeset: ac0e139fddbd
Author:    coleenp
Date:      2020-06-10 08:29 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/ac0e139fddbd

8247220: Make OopHandle constructor explicit
Summary: Fix null initializations to explicitly call the OopHandle constructor
Reviewed-by: lfoltan, kbarrett

! src/hotspot/share/classfile/classLoaderData.cpp
! src/hotspot/share/classfile/classLoaderData.hpp
! src/hotspot/share/classfile/javaClasses.cpp
! src/hotspot/share/classfile/moduleEntry.hpp
! src/hotspot/share/classfile/systemDictionaryShared.cpp
! src/hotspot/share/oops/constantPool.cpp
! src/hotspot/share/oops/cpCache.cpp
! src/hotspot/share/oops/klass.cpp
! src/hotspot/share/oops/oopHandle.hpp